高邮凹陷主要断裂体系特征研究
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摘要
苏北中新生代盆地构造复杂,断层极其发育。高邮凹陷是其典型代表。为了探寻高邮凹陷主要断裂系发育规律,本文从研究区内各主要断裂几何特征、运动学特征入手,利用地质、地震资料研究真武、吴堡、汉留断裂系发育模式,认为高邮凹陷是伸展成因的凹陷,早期区域应力环境为北西南东向的拉张,大致在真武运动时期区域伸展应力变为近南北向,真①、吴①断层形成于泰州组沉积时期,并在阜四段沉积时期达到活动高峰。真①、吴①断层都继承了中生代逆冲断层的构造形迹,真武、吴堡断裂系分别在伸展与斜滑机制下形成。真武断裂系随着时间的演化逐渐向凹陷内部推进,次级断裂的延伸方向大致平行于边界断裂且形态受边界断裂控制。吴堡断裂系则在下降盘分为两个带,靠近主断裂的地区剪应力占主导地位,因此多形成走滑成因的断层,以近东西向为主;稍远离主断裂的地区剪应力迅速衰减而以张应力的作用为主,多形成张性成因的断层,大多平行于主断裂。汉留断裂系最早出现在戴一段沉积时期,三垛时期形成断裂全貌。同时,提出真②断层3段、汉留断裂带、吴堡断裂带以及高邮凹陷主要断裂系发育模式,认为截弯取直作用、边界(断层)形态影响二级断层的发育、斜滑作用是断裂带形成的主要成因机制。
The Mesozoic-Cenozoic basin in Subei has very complex structure backgrounds, especially its faults system, and Gaoyou sag is a typical representative. In order to explore the rules of major fault systems in Gaoyou sag, we begain from the character of main fault systems’geometry and kinematics, and think that Gaoyou sag is a stretched basin which is under the reason of NW-SE stretch, and in Zhenwu tectonic movement the direction of stretch is turn to NS. The fault Zhen①and Wu①are formed during the deposition of Taizhou formation, and most activity in the fourth member of Funing formation. The fault Zhen①and Wu①have inherit the structure features in Cenozoic. Zhenwu fault system is under the mechanism of extension, Wubao fault system’s cause of formation is oblique slip. Therefore, Zhenwu fault system’evolution is gradually advancing to the internal depression, and the stretch of secondary faults roughly parallel to the boundary fault and its morphology controlled by boundary fault.Wubao fault system can divided into two belts, the area near the main fault is controlled by shear stress, for this reason, it can form many strike-slip faults, which is nearly east-west oriented. But the shear stress slight rapidly in areas far from the main fault, and form many extension faults, which mostly parallel to the main fault. Hanliu fault system appeared in the first member of Dainan formation, and ended in Sanduo tectonic movement. Meanwhile, we proposed the development patterns of Zhen②,Hanliu fault system, Wubao fault system and Gaoyou main fault systems. We also think that the fault development has relationship with Curve-straight role, boundary fault and strike-slip effect.
The Mesozoic-Cenozoic basin in Subei has very complex structure backgrounds, especially its faults system, and Gaoyou sag is a typical representative. In order to explore the rules of major fault systems in Gaoyou sag, we begain from the character of main fault systems’geometry and kinematics, and think that Gaoyou sag is a stretched basin which is under the reason of NW-SE stretch, and in Zhenwu tectonic movement the direction of stretch is turn to NS. The fault Zhen①and Wu①are formed during the deposition of Taizhou formation, and most activity in the fourth member of Funing formation. The fault Zhen①and Wu①have inherit the structure features in Cenozoic. Zhenwu fault system is under the mechanism of extension, Wubao fault system’s cause of formation is oblique slip. Therefore, Zhenwu fault system’evolution is gradually advancing to the internal depression, and the stretch of secondary faults roughly parallel to the boundary fault and its morphology controlled by boundary fault.Wubao fault system can divided into two belts, the area near the main fault is controlled by shear stress, for this reason, it can form many strike-slip faults, which is nearly east-west oriented. But the shear stress slight rapidly in areas far from the main fault, and form many extension faults, which mostly parallel to the main fault. Hanliu fault system appeared in the first member of Dainan formation, and ended in Sanduo tectonic movement. Meanwhile, we proposed the development patterns of Zhen②,Hanliu fault system, Wubao fault system and Gaoyou main fault systems. We also think that the fault development has relationship with Curve-straight role, boundary fault and strike-slip effect.
引文
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[14]能源,杨桥,张克鑫,等.苏北盆地高邮凹陷晚白垩世新生代构造沉降史分析与构造演化.沉积与特提斯地质.2009,29(2):25-32.
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[20]王霞田,戴俊生,解俊昱.高邮凹陷沙埝断块区的构造特征和构造演化.西安石油大学学报(自然科学版).2009,24(2):43-49.1117-1120.
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[22]李宝刚.高邮凹陷断裂调节带发育特征及其石油地质意义.中国石油大学学报(自然科学版).2008,32(1):19-24.
[23]史光辉,郑元财,周彬,等.高邮凹陷陡坡带戴南组断裂结构、沉积特征与成藏模式.石油天然气学报(江汉石油学院学报).2008,30(3):195-197.
[24]王永建,王延斌,梁兵.高邮凹陷泰州组油气运移及成藏.吉林大学学报(地球科学版).2007,37(5):908-912.
[25]黄峰,张卫海,王有智.高邮凹陷西部控油断层封闭性研究.断块油气田.2009,16(2):36-39.
[26]张喜林,朱筱敏,杨俊生.苏北盆地高邮凹陷古近系戴南组地震相研究.西安石油大学学报(自然科学版).2005,20(3):44-48.
[27]曹兵,刘小燕,熊学洲.断层在高邮凹陷复杂断块区成藏中的作用.江汉石油学院学报.2003,25(增刊):3-5.
[28]邱贻博,查明,陈刚.高邮凹陷陈堡地区断裂对油气运聚的控制作用.石油天然气学报(江汉石油学院学报).2006,28(3):206-210.
[29]李亚辉,徐健.高邮凹陷构造转换带控油机制研究与实践.石油天然气学报(江汉石油学院学报).2006,28(5):21-24.
[30]朱平,毛凤鸣,李亚辉.复杂断块油藏形成机理和成藏模式[M].北京:石油工业出版社,2008.
[2]许竣远,张凌云.欧亚板块东缘新生代盆地成因:右行剪切拉分作用[J].石油天然气地质,1999,20(3):187-191.
[3]陈安定.苏北箕状断陷形成的动力学机制[J].高校地质学报,2001,7(4):408-418.
[4]刘玉瑞,刘启东,杨小兰.苏北盆地走滑断层特征与油气聚集关系[J].石油与天然气地质,2004,(3):279-293.
[5]练铭祥,薛冰,杨盛良.苏北新生代盆地断陷和坳陷的形成机理[J].石油实验地质,2001,23(3):256-260.
[6]陈安定,苏北盆地构造特征及箕状断陷形成机理[J].石油与天然气地质,2010,31(2):140-150.
[7]邱旭明.苏北盆地真武吴堡断裂带的构造样式及圈闭类型[J].石油天然气学报(江汉石油学院学报),2005,27(3):278-295.
[8]李学慧.高邮凹陷南断阶断层活动对油气成藏的控制[J].新疆石油地质,2008,(6).
[9]杨琦,谈彩萍,陈宏宇,等.苏北盆地油气富集与分布的主控因素.江苏地质.2006,30(4):241 248.
[10]刘小燕,曹冰.高邮凹陷下第三系阜宁组构造特征分析[J].小型油气藏,2003,(4).
[11]邱旭明.苏北盆地扭动构造油气藏.石油勘探与开发,2004,31(3):26～29.
[12]陈莉琼.苏北盆地形成演化与油气成藏关系研究.石油天然气学报(江汉石油学院学报).2006,28(4):180-181.
[13]张小兵,郑荣才,张哨楠.高邮凹陷马家嘴-联盟庄地区戴南组构造沉积体系.大庆石油地质与开发.2007,26(1):13-17.
[14]能源,杨桥,张克鑫,等.苏北盆地高邮凹陷晚白垩世新生代构造沉降史分析与构造演化.沉积与特提斯地质.2009,29(2):25-32.
[15]张克鑫,漆家福,任红民.苏北盆地高邮凹陷断层演化规律研究.大庆石油地质与开发.2008,27(2):21-24.
[16]邱海峻,许志琴,乔德武.苏北盆地构造演化研究进展.地质通报.2006,25(9-10)
[17]吴向阳,牟荣,石胜群,等.苏北盆地火成岩发育与构造演化的关系.勘探家.1999,4(1):44-48.
[18]吴亚军.东部地区箕状断陷盆地构造演化与沉积充填特征.天然气工业.2004:28-32.
[19]谢锐杰,漆家福,王永诗,等.渤海湾盆地东营凹陷北部地区新生代构造演化特征研究.石油实验地质.2004,26(5):427-431.
[20]王霞田,戴俊生,解俊昱.高邮凹陷沙埝断块区的构造特征和构造演化.西安石油大学学报(自然科学版).2009,24(2):43-49.1117-1120.
[21]陆红梅.苏北盆地高邮凹陷陆相层序地层研究.断块油气田.1999,7(1):18-23.
[22]李宝刚.高邮凹陷断裂调节带发育特征及其石油地质意义.中国石油大学学报(自然科学版).2008,32(1):19-24.
[23]史光辉,郑元财,周彬,等.高邮凹陷陡坡带戴南组断裂结构、沉积特征与成藏模式.石油天然气学报(江汉石油学院学报).2008,30(3):195-197.
[24]王永建,王延斌,梁兵.高邮凹陷泰州组油气运移及成藏.吉林大学学报(地球科学版).2007,37(5):908-912.
[25]黄峰,张卫海,王有智.高邮凹陷西部控油断层封闭性研究.断块油气田.2009,16(2):36-39.
[26]张喜林,朱筱敏,杨俊生.苏北盆地高邮凹陷古近系戴南组地震相研究.西安石油大学学报(自然科学版).2005,20(3):44-48.
[27]曹兵,刘小燕,熊学洲.断层在高邮凹陷复杂断块区成藏中的作用.江汉石油学院学报.2003,25(增刊):3-5.
[28]邱贻博,查明,陈刚.高邮凹陷陈堡地区断裂对油气运聚的控制作用.石油天然气学报(江汉石油学院学报).2006,28(3):206-210.
[29]李亚辉,徐健.高邮凹陷构造转换带控油机制研究与实践.石油天然气学报(江汉石油学院学报).2006,28(5):21-24.
[30]朱平,毛凤鸣,李亚辉.复杂断块油藏形成机理和成藏模式[M].北京:石油工业出版社,2008.
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